4.23 PhysicalDiskStats

Use this Knowledge Script to monitor physical disk I/O and busy values:

Disk transfers per second
Disk reads per second
Disk writes per second
Disk operation time in milliseconds
Disk queue length

This script raises an event if a monitored value exceeds the threshold you specify.

NOTE:Because clustered virtual servers do not support maintenance mode, the Maintenance Mode option is unavailable for clustered virtual servers in AppManager.

4.23.1 Resource Objects

Physical disk object

4.23.2 Default Schedule

By default, this script runs every 30 minutes.

4.23.3 Setting Parameter Values

Set the following parameters as needed:

Parameter	How to Set It
Event Notification
Physical Disk I/O Notification
Raise event if disk transfers exceed threshold?	Select Yes to raise an event if the number disk transfers per second exceeds the threshold you set. The default is Yes.
Event severity when disk transfers exceed threshold	Set the event severity level, from 1 to 40, to indicate the importance of the event in which the number of times data is transferred on a disk exceeds the threshold you set. The default is 8.
Raise event if disk reads exceed threshold?	Select Yes to raise an event if the number of disk reads per second exceeds the threshold you set. The default is Yes.
Event severity when disk reads exceed threshold	Set the event severity level, from 1 to 40, to indicate the importance of the event in which the number of times data is read from a disk exceeds the threshold you set. The default is 8.
Raise event if disk writes exceed threshold?	Select Yes to raise an event if the number of disk writes per second exceeds the threshold you set. The default is Yes.
Event severity when disk writes exceed threshold	Set the event severity level, from 1 to 40, to indicate the importance of the event in which the number of times data is written to a disk exceeds the threshold you set. The default is 8.
Physical Disk Busy Notification
Raise event if disk operation time exceeds threshold?	Select Yes to raise an event if the length of time per disk operation exceeds the threshold you set. The default is Yes.
Event severity when disk operation time exceeds threshold	Set the event severity level, from 1 to 40, to indicate the importance of an event in which the length of time it takes for a disk operation to complete exceeds the threshold you set. The default is 5.
Raise event if disk queue length exceeds threshold?	Select Yes to raise an event if the number of requests in the disk queue exceeds the threshold you set. The default is Yes.
Event severity when disk queue length exceeds threshold	Set the event severity, from 1 to 40, to indicate the importance of an event in which the number of requests in the disk queue exceeds the threshold you set. The default is 5
Raise event if job fails?	Select Yes to raise an event if the PhysicalDiskStats job fails. The default is Yes.
Event severity when job fails	Set the event severity, from 1 to 40, to indicate the importance of an event in which the PhysicalDiskStats job fails. The default is 15.
Data Collection
Physical Disk I/O Data Collection
Collect data for disk transfers per second?	Select Yes to collect data for charts and reports. When enabled, data collection returns the number of disk transfers per second for the monitoring period. The default is unselected.
Collect data for disk reads per second?	Select Yes to collect data for charts and reports. When enabled, data collection returns the number of disk reads per second for the monitoring period. The default is unselected.
Collect data for disk writes per second?	Select Yes to collect data for charts and reports. When enabled, data collection returns the number of disk writes per second for the monitoring period. The default is unselected.
Physical Disk Busy Data Collection
Collect data for disk operation time?	Select Yes to collect data for charts and reports. When enabled, data collection returns the length of disk operations, in milliseconds, for the monitoring period. The default is unselected.
Collect data for disk queue length?	Select Yes to collect data for charts and reports. When enabled, data collection returns the number of requests in queue for the monitoring period. The default is unselected.
Monitoring
Physical Disk I/O Monitoring
Threshold - Maximum disk transfers per second	Specify the maximum number of disk transfers that can occur per second before an event is raised. The default is 80.
Threshold - Maximum disk reads per second	Specify the maximum number of disk reads that can occur per second before an event is raised. The default is 50.
Threshold - Maximum disk writes per second	Specify the maximum number of disk writes that can occur per second before an event is raised. The default is 50.
Physical Disk Busy Monitoring
Threshold - Maximum disk operation time	Specify the maximum length of time that a disk operation can take to complete before an event is raised. The default is 100 milliseconds.
Threshold - Maximum disk queue length	Specify the maximum number of requests that can be in queue before an event is raised. The default is 1 request.